JPH1157258A - Automatic linking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage of a first sewing part before happening by providing a stop control part which stops an automatic linking device when it is detected that the first sewing part of both knitt fabrics to approach to a guide board in the automatic linking device for automatically sewing two knitt fabrics. SOLUTION: Knitt fabrics are fed to a prescribed needle piecing position while their end parts are positioned in linking operation. Then, a drum 120 is rotated by one pitch of point needles 117, 118 by a needle moving means. After feeding the fabrics, the point needles 117, 118 are projected in the needle piecing position by a needle projecting member 110 so that the respective point needles 117, 118 are in the needle piecing states to the fabric. Meanwhile, a counter counts the rotation order of one needle pitch, etc. outputted from the controller to the motor, when the count value reaches a set value, a stop signal is generated from a signal generator, and the linking action of the automatic linking device is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic linking device for automatically stitching one endless knitted fabric and another knitted fabric, and more particularly to an automatic linking device near the end of a linking operation. The present invention relates to a control technique for detecting a sewn portion and automatically stopping a linking operation.

[0002]

2. Description of the Related Art The applicant of the present invention is disclosed in Japanese Patent Application Laid-Open No. Hei.
Japanese Patent Application Laid-Open Publication No. H11-216, proposes an automatic linking apparatus which is a premise of the present invention. First, the technology will be described and its technical problems will be clarified.

Referring to FIGS. 1 to 7, a conventional automatic linking apparatus 1 includes a knitted fabric guiding means 2, a needle moving means 3 and a knitting means 3 for pinching and linking a first knitted fabric 5 to a second knitted fabric 6. Assembled by sewing machine 4. First
Is a rectangular accessory such as a collar, and has two stitched portions extending along the longitudinal direction at the ends of both long sides. The second knitted fabric 6 is a body knitted with a neckline cut, and a stitched portion of the neckline is endless. In addition, the first knitted fabric 5 is also connected (overlocked) by connecting the short sides on both sides thereof over the entire width.
It may be endless.

[0004] The knitted fabric guiding means 2 guides each stitched portion of the first knitted fabric 5 to a first needle piercing position P1 and a second needle piercing position P2, respectively, and moves the second knitted fabric 6 to a second position. This is for guiding to the third needle insertion position P3. The knitted fabric guiding means 2 includes a pair of knitted fabric end sensors 7 serving as a first knitted fabric guiding device on the upstream side of the first needle piercing position P1 corresponding to one stitched portion of the first knitted fabric 5. A pair of knitted fabric end sensors 9 serving as a second knitted fabric guide device is provided on the upstream side of the second needle piercing position P2 corresponding to the other stitched portion of the first knitted fabric 5. , Two rollers 1
0 to the third knitted fabric 6 such as a body knitted fabric.
A pair of knitted fabric edge sensors 11, a roller 12, and a transfer guide 13 are provided as a third knitted fabric guide device on the upstream side of the needle piercing position P3. Thus, the knitted fabric guiding means 2 is constituted by the first, second and third knitted fabric guiding devices.

[0005] The knitted fabric edge sensors 7, 9 and the rollers 8, 10 are opposed to the horizontal and vertical surfaces of a table 14 having an L-shaped cross section, respectively. The vertical surface of the L-shaped table 14 extends to the second needle insertion position P2 as shown in FIG. As shown in FIG. 2, the horizontal surface of the table 14 has a narrow width from the first needle insertion position P <b> 1, and is formed between the needle row including the plurality of first point needles 17 and the front surface of the drum 20. It extends between the first needle piercing position P1 and at least half the circumference of the drum 19 in the circumferential direction. An arc-shaped guide plate 23 is provided upstream of the third needle insertion position P3, as shown in FIGS. The guide plate 23 is attached to the fixed cover 19a, and is provided so as to be located above the tip of the first point needle 17 protruding at the first needle insertion position P1. The knitted fabric edge sensor 11 and the roller 12 correspond to the outer surface of the guide plate 23.

The transfer guide 13 guides the first knitted fabric 5 pierced through a needle row composed of a plurality of second point needles 18 to the horizontal surface side of the L-shaped table 14,
By bending the first knitted fabric 5 into a U-shape,
This is for applying the first knitted fabric 5 to the end of the knitted fabric 6 in a state of being clamped, and is provided on the downstream side of the third needle insertion position P3 and on the upstream side of the sewing machine 4. In addition,
The second knitted fabric 6 has a feed roller 15 on the upstream side in the feed direction.
The guide plate 23 is sandwiched between the
Is sent to the third needle piercing position P3 along the outer periphery of.

The needle moving means 3 includes a needle row having a plurality of first point needles 17 arranged in a circle and a plurality of second point needles 17.
The point needles 18 are moved in the needle row direction while supporting the needle rows provided in a circle.
20, a motor 59 for driving the drums 19, 20, a needle pushing-up member 60, a fixed guide 61, a groove cam 22, and the like. These needle rows are respectively
The needles 9 and 20 are provided so as to be movable in the direction in which the needles are arranged. A first needle insertion position P1 and a third needle insertion position P3 are set on the movement path of the needle row of the first point needle 17. In addition, a second needle insertion position P2 is set on the movement path of the needle row of the second point needle 18.

[0008] The needle moving means 3 sequentially advances the first point needles 17 at the first needle insertion position P1 to pierce one of the sewn portions (stitched portions) of the first knitted fabric 5. The second point needle 18 is sequentially advanced at the second needle piercing position P2 to pierce the other sewn portion of the first knitted fabric 5, and the first point needle 17 is moved at the third needle piercing position P3. Further, the first and second knitted fabrics 5 and 6 are moved to the sewing position P4 after the needle is stabbed at the portion where the second knitted fabric 6 is to be sewn. Drum 19 as a first needle moving member for holding point needles 17 at equal pitches in the radial direction
And a drum 20 as a second needle moving member that holds the second point needle 18 along the circumferential direction in a state orthogonal to the first point needle 17. The drum 19 is integrally formed on the front surface of the drum 20, and these rotate in the needle moving direction.

The first point needle 17 is provided inside the drum 19 by a groove cam or a needle push-up means described later.
And project in two stages at the third needle piercing positions P1 and P3,
After passing through the sewing position P4, it returns to the original retracted position. The drum 19 is, as shown in FIGS.
4 is rotatably supported on the fixed frame 21 via bearings and groove cams 22 and is driven at a predetermined speed by gears 65 and 66 and a motor 58. A plurality of radially extending grooves 67 are formed on the drum 19 at equal pitches along the circumferential direction, and the first point needle 17 is slidable in the radial direction inside the groove 67. The fixed guide 61 is driven in the forward and backward directions as the drum 19 rotates.

That is, the fixed guide 61 moves the first point needle 17 projecting at the needle insertion position P1 to the needle insertion position P3.
To further protrude, and the first point needle 17 is moved backward past the sewing position P4. Further, the needle pushing-up member 6
0 is the first needle insertion position P1 and the first point needle 17
Is supported by a fixed fulcrum pin 71 so as to be swingable, and is connected to a crank pin 69 by a crank rod 70.

The drive shaft 68 rotatably supported by the hollow shaft 24 via a bearing (not shown)
2, 73 and a motor 59. When the drum 19 rotates and the first point needle 17 at the retreat position comes to the needle piercing position P1, the needle pushing-up member 60 pushes up the first point needle 17 at that position to thereby perform the first knitting. Insert a needle into the ground 5.
The driving means of the needle push-up member 60 is different from the above-described embodiment in that the rotation of the motor 59 is transmitted to the crank rod 70 via the gears 72 and 73 and the drive shaft 68. May be configured by an actuator such as a solenoid for moving the actuator up and down.

The second point needle 18 is held in the second needle piercing position P2 so as to be able to advance and retreat in the axial direction with respect to the drum 20. The second point needle 18 is moved by a needle push-up means (not shown) fixed to the frame 21. It protrudes at the needle insertion position P2. Similarly to the drum 19, the drum 20 has a hollow shaft 24.
And is rotatably supported by the frame 21, and is rotated in a feed direction at a predetermined speed by a motor 58. The drum 20 is one of the point needles 18
When rotated by the pitch, the second point needle 18 projecting at the second needle piercing position P2 engages with the groove of the groove cam 22 to maintain the projecting state. afterwards,
The second point needle 18 continues to be engaged with the groove cam 22 so that the transfer guide 1 is moved as shown in FIG.
The projection state is maintained to the position 3 and further extended at the time of transfer, and after passing the sewing machine hooking position P4, it retreats and returns to the original retreat position.

Further, the sewing machine 4 is provided at a sewing position P4.
, The sewing machine needle 27 is advanced toward the center of the drum 19, and the first and second knitted fabrics 5 and 6 are stitched by the sewing thread 26 by the joint operation with the looper 25 inside the drum 19. .

For example, when the endless first and second knitted fabrics 5 and 6 are stitched in a state of being sandwiched, first,
The operator places the stitched portion of the first knitted fabric 5 in a state of being bent in an L-shape with respect to the horizontal plane and the vertical plane of the L-shaped table 14, and places the stitched portion between the drum 19 and the feed roller 15. First, the second knitted fabrics 5 and 6 are wound in an aligned state. Then, the first stitch of the stitched portion of the knitted fabric 5 is pointed at the corresponding needle piercing positions P1 and P2 by the point needle 17,
18 and the stitched portion of the knitted fabric 6 is pierced through the point needle 17 at the needle piercing position P3. afterwards,
The automatic linking device 1 is started, and each of the knitted fabrics 5 and 6 is moved in the direction indicated by the arrow.

In the course of this movement, the first knitted fabric guiding device (knitted fabric end sensor 7 / roller 8) moves to the first needle insertion position P1 while positioning one end of the first knitted fabric 5. invite. That is, the first knitted fabric guiding device holds one end of the first knitted fabric 5 between the horizontal surface of the table 14 and the roller 8, and the one end of the first knitted fabric 5 is The roller 8 is moved in the axial direction according to a knitted fabric detection signal from the pair of knitted fabric end sensors 7 so as to be located between the pair of knitted fabric end sensors 7. In addition, the roller 8 may be positively rotated, or may be drivenly rotated according to the feed of the knitted fabric 5.

At the same time as the guiding operation of the first knitted fabric guiding device,
Second knitted fabric guiding device (knitted fabric end sensor 9 / roller 10)
Also, the other end of the first knitted fabric 5 is moved between the pair of knitted fabric end sensors 9 by moving the roller 10 in the axial direction according to the knitted fabric detection signal from the pair of knitted fabric end sensors 9. Position. Thereby, the stitched portion of the first knitted fabric 5 is guided to the second needle insertion position P2. In this way,
The next edge portions to be stitched next to the first knitted fabric 5 are in the positioning state, and the first and second needle piercing positions P1, P
You will be guided to 2.

At the needle piercing positions P1 and P2, the first,
The second point needles 17 and 18 project, respectively, so as to be in a needle piercing state without being picked up at the next stitched portion of the first knitted fabric 5 in the positioned state, and while maintaining this state, the drum 19, By the synchronous rotation of 20, it moves in the feed direction. The first knitted fabric 5 pierced by the first point needle 17 moves below the arcuate guide plate 23 in the moving process. The rotation driving member (not shown) connected to the feed roller 15 is a drum 1
9 and 20, the feed of the first and second knitted fabrics 5 and 6 is synchronized with the movement of the point needles 17 and 18.

On the other hand, the second knitted fabric 6 is moved from the first point needle 17 to the drum 19 near the first needle piercing position P1.
In the axial direction. However, since the second knitted fabric 6 is held between the guide plate 23 and the roller 12 by them, the stitched portion of the second knitted fabric 6 moves to the first point as it moves to the guide plate 23. It is guided to above the needle 17.

A third knitted fabric guiding device (knitted fabric end sensor 11
At the position where the roller 12 and the transfer guide 13) are provided, the knitted fabric end sensor 11 detects the end of the stitched portion of the second knitted fabric 6, and moves the roller 12 in the axial direction. The stitched portion is positioned at the third needle insertion position P3. Thereafter, the first point needle 17
Is further raised at the third needle insertion position P3, so that the needle is inserted without being picked up at the stitched portion of the second knitted fabric 6. Thus, at the third needle insertion position P3, the first point needle 17 is in a needle insertion state with respect to one of the stitched portions of the first knitted fabric 5 and the stitched portion of the second knitted fabric 6, At the same time, the distal end portion is brought into contact with the distal end of the second point needle 18. In this way, the point needles 17 and 18 are continuously joined by abutting at the tip portions, and are in a transferable state.

The transfer guide 13 moves the first knitted fabric 5 from the second point needle 18 to the first knitted fabric 5 in the process of moving the first and second knitted fabrics 5 and 6 in the needle piercing state to the sewing position P4.
The first knitted fabric 5 is transferred by moving the first knitted fabric 5 in the direction of the
The knitted fabric 5 is in a state of being sandwiched. Thereby, the first
The stitched portions of the first and second knitted fabrics 5 and 6 are in a needle piercing state with respect to the point needle 17 of the
You will be guided to 4. The transfer guide 13 has two inclined surfaces parallel to the first point needle 17 and the second point needle 18 and extending at a predetermined angle with respect to the longitudinal direction of each needle. ing. When these two inclined surfaces are developed, they are shown in FIG.

As the first knitted fabric 5 moves with the second point needle 18, it gradually moves to the tip of the second point needle 18 while contacting one of the inclined surfaces of the transfer guide 13. Then, while contacting the other inclined surface, the first
The point needle 17 is transferred by moving to the rear end. Here, the sewing machine 4 includes the sewing machine needle 27 and the looper 2.
By the operation with 5, the first and second knitted fabrics 5, 6 are sewn together with the sewing thread 26 in a state of being clamped.

The above operation is performed under a control device (not shown). That is, the control device sets the first needle insertion position P
By driving each needle pushing-up means at the first and second needle piercing positions P2, the point needles 17 and 18 are respectively protruded, and the two stitched portions of the knitted fabric 5 are pierced respectively. Thereafter, a rotation command is output to the motor 58 to rotate the drums 19 and 20 by one pitch of the point needle, and then the sewing machine 4 is driven to sew the knitted fabrics 5 and 6 for the first stitch.

As shown in FIG. 8, the endless first knitted fabric 5 is formed by joining only a part (half) of both side ends (short sides) of a rectangular accessory stitch to form an annular shape. According to this example, the needle sticking operation starts from the joining unit 5b, makes a round, and ends at the joining unit 5b. At the start of linking, the operator stabs only the first stitch of the stitched portion of the knitted fabric 5 at the first needle stab position P1 and the second needle stab position P2 into the point needles 17 and 18 and manually sets the second knit fabric. After piercing the point needle 17 at the third needle piercing position P3, the automatic linking device 1 is started, and the needles are sequentially pierced while feeding the first and second knitted fabrics 5, 6 as described above. . Since the accessory knitting as the first knitted fabric 5 is joined by only a part of the short side to form an annular shape as described above, just before the end of linking, as shown in FIG. Is not bent, and the detection of the edge of the knitted fabric and the guidance of the knitted fabric are performed smoothly.

As described above, the technique disclosed in Japanese Patent Application Laid-Open No. H8-309051 discloses two needle piercing positions P1 on one needle row.
P3 is set, and the needle piercing positions P1, P
3, a guide plate 23 is provided. Then, during the linking operation, the automatic linking device 1 inserts one of the two knitted fabrics 5, 6 into one of the needle puncturing positions P1, P1.
2, the needle row is moved, and one knitted fabric 5 is moved below the guide plate 23, and the other knitted fabric 6 is moved above the guide plate 23, and then the other knitted fabric 6 is moved. At the other needle insertion position P3, and the two knitted fabrics 5 and 6 are stitched together with the sewing machine 4.

According to the above-described technique, the guide plate 23 moves the knitted fabric 5 during the operation of the automatic linking device 1 for the following reason.
There is a risk of damaging 6 and humans were required to prevent it.

When at least one of the two knitted fabrics 5, 6 is endless, as linking proceeds,
The first stitched portions of the knitted fabrics 5 and 6 move and approach the guide plate 23. When the movement of the needle row is continued, as shown in FIG. 9, the first sewn portion interferes with the guide plate 23, and the sewn portion is damaged. When both the knitted fabrics 5, 6 are endless, they cannot pass through the guide plate 23. When only the body-side knitted fabric 6 is endless, both the sewn knitted fabric 6 and the knitted fabric 5 pass through the guide plate 23, but the knitted fabric 5 is easily caught by the guide plate 23, and Has difficulty in artificial suturing.

Therefore, in the conventional automatic linking device 1, it is necessary to perform the following operations. Upon estimating that the sewn portion has approached the guide plate 23, the operator stops the automatic linking device 1, removes the guide plate 23 from the fixed cover 19a, and moves the needle row at a low speed while the remaining knitted fabric 5, The part 6 is sutured. Explaining according to the above embodiment, the knitted fabric 5 on the attachment side is provided with the point needles 17 and 18.
The knitted fabric 6 on the body side is stuck into the point needle 17 by hand, and the knitted fabric 5 is transferred from the point needle 18 to the point needle 17 so that the knitted fabric 6 is clamped. The remaining part is sutured by sewing machine 4 while moving the row at low speed.

[0028]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic linking apparatus for automatically sewing two knitted fabrics, one endless knitted fabric of the two knitted fabrics and the other endless or non-endless knitted fabric. To prevent damage to the first stitched portion with the knitted fabric without human intervention.

[0029]

To achieve the above object, the present invention provides a needle array comprising a plurality of point needles which are arranged along a circle at a predetermined pitch and which can be moved in the arranged direction. A guide plate provided between the two needle piercing positions set in, a knitted fabric guiding means for guiding each of two knitted fabrics in which at least one knitted fabric is endless to the needle piercing position; An automatic linking device including a needle moving means for sequentially piercing a point needle into a stitched portion of a piece of knitted fabric and moving the point needle in a needle row direction, and a sewing machine for sewing the two stitched needled fabrics, By providing a stop control unit that stops the automatic linking device when it is detected that the first sewn portion of the knitted fabric approaches the guide plate, the automatic linking device is automatically activated when the first sewn portion approaches the guide plate. And to be stopped, thereby preventing damage to the first suture portion in advance, and to allow migration manually subsequent linking operation.

Here, the guide plate and the roller as the knitted fabric guiding means are provided so as to be retractable from the needle row. After the automatic linking device is stopped, the roller is manually moved to the retracted position or stopped. Driving means operated by an evacuation command signal from the control unit can move to a predetermined evacuation position. In addition, the automatic linking device is capable of both scissoring linking and single linking, and includes both those composed of two needle rows and those composed only of a single needle row.

The stop control unit outputs a stop signal when the number of times the point needle has been moved by one pitch reaches a set value, and counts the number of point needles protruded. A limit switch is provided in the movement path of the sewn portion when the stop signal is detected, and a stop signal is output when the limit switch detects the first sewn portion.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 10 to 15 show the main part of an automatic linking device 101 for scissoring linking by two rows of circular needles as in the above-mentioned conventional example. Note that the following description is made mainly for portions different from the conventional example. And also in this automatic linking device 101, the knitted fabric guiding means 2 similar to the conventional example,
Although the sewing machine 4, the table 14, and the like exist, their illustration and description are omitted.

The drum 120 corresponds to the drum 20 of the conventional example, and has a cylindrical shaft portion and a fixed shaft 132 with a bearing 131.
It is rotatably attached to. Fixed shaft 132
Accommodates the cam shaft 135 in a rotatable state inside the center hole, and is fixed to the frame 133 by the fixture 134 at one end. The rear end portion of the cylindrical shaft portion of the drum 120 is integrated with a gear 137, and the gear 13
7 meshes with a gear 138 fixed to the intermediate shaft 139.

The rotation of the motor 142 for driving the drum is performed by rotating the drum 120 at a predetermined speed via the timing pulley 141 fixed to the motor output shaft and the intermediate shaft 139 and the timing belt 140 wound around them. Conveyed as The intermediate shaft 139 is a bearing 1 inside the housing 144 fixed to the frame 133.
43 and rotatably supported by the motor 1
Reference numeral 42 is attached to a part of the housing 144.

The drum 120 has, on its outer peripheral surface, a second point needle corresponding to the second point needle 18 of the conventional example along the generatrix direction.
Is held in a state where it can advance and retreat.
These point needles 118 are arranged side by side in the circumferential direction at a constant pitch to form a needle row, and engage with the cam 146 on the inner peripheral surface of an integral part of the fixed shaft 132 to move in the reciprocating direction. You will be guided. In addition, the point needle 118 pushes the push-up member 14 at the needle insertion position P2.
The first knitted fabric 5 is pushed up in the forward direction by the first knitted fabric 5 and protrudes to one joint portion. Push-up member 147
The slider 148 can be moved in the forward and backward directions of the point needle 118 by a rail 149 fixed to the frame 133 at the slider 148, and is driven by a cam roller 150 and a groove cam 152 integrated with the slider 148. I have.

The cam shaft 151 of the groove cam 152 is connected to a bearing 127 inside a housing 126 integrated with the frame 133.
Rotatably supported by the camshafts 135, 1
A timing pulley 128 fixed to 51 and a timing belt 129 wound around the timing pulley 128 rotate in synchronization with the cam shaft 135. Note that the cam shaft 135 is driven by a cam drive motor (not shown) by a timing pulley 124 and a timing belt 125. As described above, the point needle 118 is pushed up in the needle piercing direction by the push-up member 147, then guided by the cam 146, and further protrudes to move in two stages.

The drum 119 inside the drum 120
Corresponds to the drum 19 of the related art, and accommodates a large number of first point needles 117 in a radially movable manner at a predetermined pitch on the inner side along the inner circumferential direction. In other words, these point needles 117 correspond to the first point needles 17 of the conventional example, and are arranged side by side by the support ring 130 and the presser 136 so as to be rotatable around one end. Side cam follower 121
Disc-shaped cam 1 fixed to the fixed shaft 132 at the portion
When driven in contact with the contours of the drums 02 and 122 and further projecting radially from the opening surface of the drum 119 at the leading end,
The end point of the corresponding point needle 118 is brought into abutting state.

One cam 102 is located in a section past the sewing position P4 from the needle insertion position P1 and, as shown by a dashed line in FIG. 12, moves the point needle 117 projecting at the needle insertion position P1 to the needle tip. Guide along the trajectory. The other cam 122 is moved from the sewing position P4 to the needle piercing position P.
In the section up to 1 and hitting the rear end of the point needle 117, the point needle 117 in the protruding state is retracted toward the center of the drum 119, and while this retracted position is maintained, it is shown by a two-dot chain line in FIG. Guide along the trajectory of the needle point. Of course, these point hands 117, 118
Are attached to the drums 119 and 120 at the same pitch.

On the other hand, the groove cam 104 attached to the tip of the cam shaft 135 is engaged with the cam roller 106 attached to the slider 105 at the groove.
The slider 105 is attached so as to be movable in the axial direction of the fixed shaft 132 by a roller 109 attached to the base 108 at the groove.

The base 108 holds the push-up member 110 in a rotatable state at the portion of the support shaft 107, and is constantly urged clockwise by a pulling spring 111 in the drawing. At the needle sticking position P1, when the end of the slider 105 hits one end of the push-up member 110 and rotates it counterclockwise, the other end of the push-up member 110 hits the point needle 117 and moves it to the center of the drum 119. , And the tip of the point needle 117 is projected at the needle insertion position P1 as described above. As a result, the point needle 117 is moved to the first position
Of the knitted fabric 5 to be stitched and held.
As described above, the point needle 117 is
And protrudes in the direction of the knitted fabric 5.

Here, the rotatable drums 119, 120,
Drum drive motor 142, push-up member 110, 1
47, the cams 102, 122, and 146
3.

The guide plate 123 is a conventional guide plate 23.
And is fixed to the slider 113 and the rail 1
14 along the cam shaft 135 along the rail 1
It moves to a position where it comes into contact with a stopper 115 integrated with 14. Further, the rail 114 is integrated with the slider 116, and can be moved up and down by a rail 153 fixed to the cover 145.

The cover 145 is fixed to the distal end of the fixed shaft 132 by a stay 154. The air cylinder 1 fixed to the stay 145 by a support shaft 155
Numeral 56 denotes a driving means for moving the guide plate 123 to the retracted position.
8 attached to the slider 113 in an oblique direction. The guide roller 159 fixed to the pin 158 rolls and moves on the upper surface of the cover plate 160 fixed to the upper surface of the cover 145, and the notch 16
The inside of the U-shaped guide 162 provided at the portion 1 can also move to the lower side of the cover plate 160.

Therefore, when the piston rod 157 is in the extended state, the guide plate 123 moves forward and moves near the point needles 117 and 118, but when the piston rod 157 retreats, the guide roller 159 is covered. In order to retreat while rolling on the upper surface of the plate 160, first, the guide plate 123 and the slider 1 integrated therewith
13 retreats, and then the guide roller 159 moves the guide 162
, The slider 116 descends along the rail 153, so that the guide plate 123 descends and moves to the retracted position.

The guide plate 123 is for slidingly guiding the second knitted fabric 6 as described above.
It is guided to the needle sticking position P3 by the rotation of the roller 112 corresponding to the roller 12 of the conventional example. Therefore, the roller 1
12 is supported by a roller shaft 163 so as to be rotatable with respect to a bracket 164. The output shaft 12 of the motor 165, a pulley 166 attached to the roller shaft 163, and a belt 167 wound around the motor 165 include a motor 165.
Is driven in the direction of the arrow.

The motor 165 is attached to the slider 168 and is movable in the direction of the rail 169, that is, in the vertical direction, and can be moved in the vertical direction by the solenoid 170. Also, the rail 169
Is fixed to the belt 171.
71 is wound around a pair of pulleys 172, and the motor 1
In order to position the knitted fabric 6 in the sewing direction in the direction of the belt 171, that is, in the horizontal direction by the rotation of 73,
The roller 112 can be moved in the direction of the cam shaft 135.

The motor 173 is vertically movable by a slider 174 and a vertical rail 175, and is driven by an actuator 176 as a driving means to guide the roller 112 to a retracted position, that is, a retracted position, that is, a guide plate. It rises from 123 and moves to the evacuation position.

Next, FIG. 16 shows the configuration of the stop control unit 177. Point hands 117, 1 to motor 142
18, a rotation command for one pitch or the point needle 117,
A signal from the sensor 178 generated when the 118 is extended is input to the counter 179. The sensor 1
Reference numeral 78 denotes, for example, a proximity switch which is provided near the push-up portion 110 or the push-up member 147 as shown in FIG. 10, and detects the push-up operation of each member to detect the protrusion of the point hands 117, 118. In the counter 179, N = {(the total number of stitches to be sewn) − (the number of hand stitches at the time of setting + the predetermined value α)} is set in advance as the set value N. This is to stop the linking operation when the knitted fabric 6 stabbed by hand at the time of setting is closer to the stitching position P1 by a predetermined number α. Counter 179
Counts a preset value N, the counter output is sent to the signal generator 180, so that the signal generator 18
0 generates a stop signal to the automatic linking device 101 and also generates a retreat command signal for moving the guide plate 123 and the roller 112 to the retreat position.

During the linking operation, the knitted fabric guiding means 2
In the automatic linking apparatus 101, the knitted fabric 5,
6 while positioning the end of P6, predetermined needle piercing positions P1, P
2. Send to P3. The drum 120 is rotated by the needle moving means 103 by one pitch of the point needles 117 and 118. After the knitted fabrics 5 and 6 are sent, the point needles 117 and 118 are projected by the needle push-up members 110 and 147 at the needle piercing positions P1 and P2.
In steps 17 and 118, the respective knitted fabrics 5 and 6 are stuck. The automatic linking device 101 repeats the above operation by a control device (not shown). Thus, as in the conventional example, the two knitted fabrics 5 and 6 are placed at the sewing position P4.
Sewn by sewing machine 4.

On the other hand, the counter 179 counts a rotation command for one pitch of the hand to the motor 142 output from a control device (not shown), and when the counted value N reaches a preset value, a signal is generated. The counter 180 generates a count signal. Here, the signal generator 180 generates a stop signal to stop the linking operation of the automatic linking device 101. At the same time, the signal generator 180 generates an evacuation command signal. At this time, the actuator 176
By raising the slider 174, the roller 112
Is separated from the guide plate 123 and the guide plate 123 and the roller 1
The knitted fabrics 5 and 6 are released between the knitted fabrics 12 and 12. Of course motor 1
65 has already been stopped by the stop signal.

The air cylinder 156 moves the piston rod 157 backward. As a result, the guide roller 159 moves in the retreating direction while rolling on the upper surface of the cover plate 160. Slider 113 is stopper 11
When the roller 5 hits, the guide roller 159 enters the inside of the guide 162. Therefore, from this point on, the slider 116 descends along the rail 153 while the piston rod 157 retreats. Thus, the guide plate 1
23 moves to the evacuation position by descending while retreating.

FIG. 17 shows that the limit switches 18 indicate that the first stitched portions of the knitted fabrics 5 and 6 have approached the guide plate 123.
This is an example in which the detection is performed by using No. 1. Limit switch 181
Is provided at the position shown in FIG. When the first sewn portions of the knitted fabrics 5 and 6 approach the guide plate 123, more specifically,
When approaching the needle piercing position P1, the limit switch 181 responds to the thickness of the sewn portion and generates an output to the signal generator 180. At this time, similarly to the above-described example, the signal generator 180 generates a stop signal to the control device of the automatic linking device 101, generates a retreat command signal, retreats the guide plate 123, and
12 is moved to the evacuation position.

FIG. 18 further shows that the guide plate 123 is supported by the tip of an L-shaped holder 182,
This is an example in which the other end of the second actuator 2 is connected to the output shaft of a rotary actuator 183. During the linking operation, the rotary actuator 183 holds the guide plate 123 at a predetermined position by bringing the holder 182 into a substantially vertical state and abutting against the stopper 184. By rotating the 182 counterclockwise, for example, 90 degrees, the guide plate 123 is moved to the retracted position.

Although the above-described embodiment is an apparatus for scissoring linking, the present invention may be applied to a guide plate 123 of a single linking apparatus having one needle row. In the single linking apparatus, the second point needle 18 (the second point needle 11
8) The second knitting fabric guiding device 2 (the knitting fabric end sensor 9 and the roller 10) and the transfer guide 13 are omitted. Note that the stop control unit 177 may be configured to stop the linking device, output an alarm, and not output an evacuation command. In that case, the operator then retracts the guide plate 123 and the roller 112.

[0055]

According to the present invention, when the first sewn portion approaches the guide plate, the automatic linking device stops, so that damage to the sewn portion can be reliably prevented without relying on humans. Also, if the guide plates and rollers are automatically moved to the retracted position simultaneously with the stop of the automatic linking device, the worker can immediately start the needle sticking work on the remaining knitted fabric, which makes the work easier and stops. Time is short, and workability is improved.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an automatic linking device according to a conventional example.

FIG. 2 is a schematic plan view of a conventional automatic linking device.

FIG. 3 is a schematic side view of an automatic linking device according to a conventional example.

FIG. 4 is a sectional view of a driving portion of a first point needle according to a conventional example.

FIG. 5 is a front view of a cam portion for moving a first point needle according to a conventional example.

FIG. 6 is a sectional view of a driving portion of a second point needle according to a conventional example.

FIG. 7 is a development view of first and second point needles according to a conventional example.

FIG. 8 is a perspective view of a ring-shaped first knitted fabric (attached knit).

FIG. 9 is a perspective view when linking the first knitted fabric to the second knitted fabric in a state of being sandwiched;

FIG. 10 is a sectional view of a needle moving portion of the automatic linking device according to the present invention.

FIG. 11 is a side view of a driving portion of the guide plate.

FIG. 12 is a front view of a driving portion of the guide plate.

FIG. 13 is a plan view of a driving portion of the guide plate.

FIG. 14 is an enlarged cross-sectional view of a pushed-up portion of a first point needle.

FIG. 15 is a side view of the roller retracting device.

FIG. 16 is a block diagram of a stop control unit.

FIG. 17 is a block diagram of a stop control unit.

FIG. 18 is a side view of a support portion of the guide plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conventional automatic linking device 2 Knitted fabric guiding means 3 Needle moving means 4 Sewing machine 5 First knitted fabric 6 Second knitted fabric 17 First point needle 18 Second point needle 101 Automatic linking device 103 of the present invention 103 needle Moving means 112 Roller 117 First point needle 118 Second point needle 123 Guide plate 156 Air cylinder 176 Actuator 177 Stop control unit

Claims (4)

[Claims] 1. A needle array composed of a plurality of point needles (117) which are arranged along a circle at a predetermined pitch and are movable in the arranged direction, and two needle stick positions set on the needle array. Between the guide plate (123) and two knitted fabrics (5, 5) in which at least one knitted fabric is endless.
6), and a point needle (117) is sequentially pierced through the stitched portions of the two knitted fabrics (5, 6) guided, and the point needle (117) Needle moving means (1) for moving the
03) and a sewing machine (4) for suturing two knitted fabrics (5, 6) pierced with a needle (10).
In 1), the first stitched portion of both knitted fabrics (5, 6) is the guide plate (1).
23) An automatic linking device (101) characterized in that a stop control unit (177) for stopping the automatic linking device (101) when detecting the approach to (23) is provided. 2. The automatic linking device (101) according to claim 1, wherein the guide plate (123) is provided so as to be retractable from the needle row. 3. A roller (1) as a knitted fabric guiding means (2).
The automatic linking device (101) according to claim 1, characterized in that (12) is provided so as to be retractable from the needle row. 4. A guide plate (123) is provided so as to be retractable from the needle row, and a roller (112) as a knitted fabric guiding means (2) is provided so as to be retractable from the needle row. 177) by the output of the guide plate (123),
The automatic linking device (101) according to claim 1, characterized in that the drive means (156, 176) for the roller (112) is activated in the retracting direction.